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fix(context): persist fallback compaction breaker

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kshitijk4poor 2026-07-14 01:50:20 +05:30 • committed by kshitij
parent 5ce827cac9
commit af7dceaf77
10 changed files with 394 additions and 91 deletions
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64
tests/agent/test_compaction_anti_thrash.py
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@ -210,6 +210,70 @@ class TestFutilityGuard:
assert cc.awaiting_real_usage_after_compression is False
assert cc._ineffective_compression_count == 0
def test_fallback_streak_survives_ordinary_fitting_responses(self):
cc = _compressor(threshold_tokens=24_576)
cc.record_completed_compaction(used_fallback=True)
cc.update_from_response({"prompt_tokens": 20_000})
assert cc._fallback_compression_streak == 1
# Context regrows through ordinary successful turns before the next
# fallback boundary. Those turns reset real-usage effectiveness, not
# the independent summary-quality breaker.
cc.update_from_response({"prompt_tokens": 20_000})
cc.record_completed_compaction(used_fallback=True)
cc.update_from_response({"prompt_tokens": 20_000})
assert cc._fallback_compression_streak == 2
assert not cc.should_compress(33_564)
def test_usage_less_fallback_boundary_still_counts(self):
cc = _compressor(threshold_tokens=24_576)
cc.record_completed_compaction(used_fallback=True)
cc.awaiting_real_usage_after_compression = True
cc.update_from_response({})
assert cc._fallback_compression_streak == 1
assert cc._verify_compaction_cleared_threshold is False
assert cc.awaiting_real_usage_after_compression is False
def test_healthy_boundary_resets_only_fallback_streak(self):
cc = _compressor(threshold_tokens=24_576)
cc.record_completed_compaction(used_fallback=True)
cc.record_completed_compaction(used_fallback=False)
assert cc._fallback_compression_streak == 0
assert cc._verify_compaction_cleared_threshold is True
def test_model_switch_resets_and_persists_fallback_streak(self, tmp_path):
from hermes_state import SessionDB
db = SessionDB(db_path=tmp_path / "state.db")
db.create_session("s1", source="cli")
cc = _compressor(threshold_tokens=24_576)
cc.bind_session_state(db, "s1")
cc.record_completed_compaction(used_fallback=True)
cc.update_model("next-model", 100_000)
assert cc._fallback_compression_streak == 0
assert db.get_compression_fallback_streak("s1") == 0
def test_same_runtime_context_recalibration_preserves_fallback_streak(self, tmp_path):
from hermes_state import SessionDB
db = SessionDB(db_path=tmp_path / "state.db")
db.create_session("s1", source="cli")
cc = _compressor(threshold_tokens=24_576)
cc.bind_session_state(db, "s1")
cc.record_completed_compaction(used_fallback=True)
cc.update_model(cc.model, 64_000, provider=cc.provider)
assert cc._fallback_compression_streak == 1
assert db.get_compression_fallback_streak("s1") == 1
def test_a_failed_pass_records_exactly_one_strike(self):
"""A compaction that leaves the real prompt over the threshold: one strike.